function-machine/division/starter · Sæt 48

8 problems
1
Input: 4 → [?] → 9, what is the rule? =
2
Input: 8 → [+2] → ? =
3
Input: 9 → [-1] → ? =
4
? → [-3] → 1 =
5
Input: 5 → [+5] → ? =
6
Input: 5 → [?] → 15, what is the rule? =
7
Input: 9 → [×3] → ? =
8
? → [×3] → 9 =
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